fix lane rendering

includes/view/ShiftCalendarLane.php

@@ -2,6 +2,8 @@
 
 namespace Engelsystem;
 
+use Exception;
+
 /**
  * Represents a single lane in a shifts calendar.
  */
@@ -38,6 +40,7 @@ class ShiftCalendarLane
      * Returns true on success.
      *
      * @param array $shift The shift to add
+     * @throws Exception if the shift doesn't fit into the lane.
      */
     public function addShift($shift)
     {

includes/view/ShiftCalendarRenderer.php

@@ -1,6 +1,8 @@
 <?php
 namespace Engelsystem;
 
+use Exception;
+
 class ShiftCalendarRenderer
 {
 
@@ -93,9 +95,9 @@ class ShiftCalendarRenderer
             $shift_added = false;
             foreach ($lanes[$room_id] as $lane) {
                 /** @var ShiftCalendarLane $lane */
-                try {
+                if($lane->shiftFits($shift)) {
                     $lane->addShift($shift);
-                } catch (Exception $e) {
+                    $shift_added = true;
                     break;
                 }
             }